"We are so blessed to be engaged!" the happy husband and wife-to-be said in a statement. "God has written an amazing story through our courtship, and another chapter has just begun! We are thrilled to see what the future holds -- especially the wedding bells!"

Duggar, 21, recently celebrated her 11 "monthiversary" with Seewald, 19. To celebrate, he presented her with a pearl bracelet and a handwritten love note, which he decorated with hearts.

"What good are such beautiful pearls if not to have the grace of being worn by one so elegant and majestic as yourself?" the note read. "These pearls were lonely...just like I am when we're apart; but not anymore! I love you my precious princess!"

Like her recently married sister, Jill Duggar -- who wed Derick Dillard on June 21 -- Jessa is saving her first kiss with her fiance for marriage. Per the family's rules for courtship, she and Seewald have only shared occasional "side hugs" until now, and always have a chaperone on their dates together.

"When I'm with him, around him, I think he brings out the best in me," she said on her family's reality show when they first started courting. Added Ben: "I think we're a good match."